"Ik begrijp niet wat je zegt, want je praat te snel."
Translation:I do not understand what you are saying, because you are speaking too fast.
This sentence gave me the whole sentence without me having to fill in a single one. I don't think only having to hit "Check" is the purpose of this. Is there any particular place where I should post the screenshot?
File a bug report: https://support.duolingo.com/hc/en-us/requests/new
And feel free to upload the screenshot somewhere and post the link here, so others can use that in their bug report.